From: ara.t.howard@...
Date: 2006-11-16T01:20:31+09:00
Subject: Re: Design problem with 'inject'

On Thu, 16 Nov 2006, Robert Klemme wrote:

> Small correction: if called *without arguments* the first invocation will 
> look like this:
>
> |enumerable_element_1, enumerable_element_2|
>
>>> %w{foo bar baz}.inject {|*a| p a}
> ["foo", "bar"]
> [nil, "baz"]
> => nil
>>> %w{foo bar baz}.inject(nil) {|*a| p a}
> [nil, "foo"]
> [nil, "bar"]
> [nil, "baz"]
> => nil
>
> This is actually useful to do something like this:
>
>>> %w{foo bar baz}.inject() {|a,b| a+", "+b}
> => "foo, bar, baz"

wow - you learn something every day - that's great!

cheers.


-a
-- 
my religion is very simple.  my religion is kindness. -- the dalai lama